package string01;

public class ToUpperCaseDemo {
    public static void main(String[] args) {
        String str = "hHhHhHhH";
        String num1 = str.toUpperCase();
        System.out.println(num1);
        String num2 = str.toLowerCase();
        System.out.println(num2);






























        /*String str = "abcdefghijklmnopqrstuvwsyz";
        String upper = str.toUpperCase();
        System.out.println(upper);
        String lower = str.toLowerCase();
        System.out.println(lower);*/
    }
}
